[Campbell Biology P.733] According to the 'SUMMARY OF KEY CONCEPTS,' which of the following ... | Practice Question

According to the 'SUMMARY OF KEY CONCEPTS,' which of the following is a fundamental characteristic of animals?

  • A: Animals are autotrophs that produce their own food.
  • B: Their cells are supported by chitin and cell walls.
  • C: Animals are multicellular eukaryotes and heterotrophs that ingest their food.
  • D: In most animals, gastrulation precedes the formation of the blastula.

Explanation

The 'SUMMARY OF KEY CONCEPTS' section explicitly states: 'Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers' and 'Animals are heterotrophs that ingest their food.' It also mentions 'gastrulation follows the formation of the blastula' and that cells are supported by 'collagen and other structural proteins located outside the cell membrane'.